6MM Fat Rat load data help.

[Striper Slayer]

Does anyone have any load data for the Fat Rat they would be willing to share? Just got mine up and running.
Any data for a 65 gr HP?
Thanks for the help!

 

[zanemoseley]

I'm running a 6mm Fat Rat as well, just finished it a couple months ago. What is your twist rate? Most typical for the Fat Rat is 1:8. Is there any particular reason you want to run such a small bullet? Most people are using high BC 105-108 grain bullets. I've had good luck with the 105 Berger Hybrid Target with 30.0 RL15, in my gun the seem to like to jump a lot, currently mine jumps .050" I believe, still single load only. Have shot a 192/200 with this load on a 600 yard F class target, not bad for an AR. I'm also testing the Hornady 105 Match bullet which is shorter than the Berger as a mag length load.

 

[Striper Slayer]

Mine is a 1 in 8 as well. Headed to Wyoming at the enod of the month to shoot some PDogs and have a bunch of the 65 gr hp's. Just hoping to find a load that will allow me to shoot them so I am not burning up the expensive bullets.
Thanks for the load data!

 

[zanemoseley]

Just my opinion, if you spent the extra cash on a Fat Rat barrel and nice Grendel brass don't cheap out on buying the right bullets. Have you fire formed your brass yet? You might be able to get rid of your 65 grain bullets during your fire forming.

 

[Striper Slayer]

That was my plan, fire form brass while making biodegradable artwork.

 

[zanemoseley]

Just test a few before heading on your trip. With a twist that fast and a bullet that small there's a chance it will blow apart in flight. It would suck mucho if you want all the way on a trip and your ammo was no good.

 

[Yote Hunter]

27.5 gr H 4895 and CCI BR 4 works really well in a 6mm AR Turbo 40. I have used that load to fire form brass using the 87 gr class bullets. Accurate.

 

[Striper Slayer]

Thanks for all the help!

 

[10at6]

27.8 gr of 8208 with 105s